Iminodiacetate chelating resin and manufacturing method therefor
AssigneeMitsubishi Chemical Corporation
InventorsRyosuke TSUHARA, Masahiko HASHIGUCHI, Hirohisa KUBOTA
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Abstract
The present invention relates to an iminodiacetic acid chelating resin, wherein the water amount in the resin is from 50 to 75% and the volume ratio of Na form/H form is from 1.4 to 1.8. Furthermore, the present invention relates to a method for producing an iminodiacetic acid chelating resin, wherein an alcohol is used as a solvent for the amination reaction of a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile or sodium iodide and/or potassium iodide is used as a catalyst for the amination reaction.
Claims13
An iminodiacetic acid chelating resin, wherein the water amount in the resin is from 50 to 75% and the volume ratio of Na form/H form is from 1.4 to 1.8.
A method for producing an iminodiacetic acid chelating resin, comprising aminating a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile, and hydrolyzing the aminated styrene crosslinked copolymer, wherein:
- an alcohol is used as a solvent for the amination reaction.
A method for producing an iminodiacetic acid chelating resin, comprising aminating a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile, and hydrolyzing the aminated styrene crosslinked copolymer, wherein:
- sodium iodide and/or potassium iodide is used as a catalyst for the amination reaction.
Dependencies are inferred from the claim text.